Abstract

This paper reviews different possibilities to obtain the radiation forces for time-domain simulations
of wave energy converters or other floating structures. Three different ways to calculate the radiation forces
using boundary element methods are compared in the time- and frequency-domain. The three boundary element
programs are also compared with respect to their computational cost. To approximate the radiation forces, two
different methods are investigated, Prony’s method in the time-domain, and frequency domain identification in
the frequency-domain.